Selvage trimmer



Dec; 6, 1927. 1,652,149

P. PAPPANO SELVAGB TRIMMER Filed Nov. 4. 1922 tried out.

Patented Dec. 6, 1927.

Umie: sieves; mile"? PHILIP PAP-PANO, OF AKRON, -OHIO, ASSIGIIOR TO THE GOODYEAR TEE-E & RUBBER COIEPA N-Y, OF AKRON, 021310, A COBPORATIGN OF OHIO.

SE V IMMEB- My invention relates to gum selyaige trimmers and it particularly Anelates tortrimmer s fer use withmechines forcalendering rnbber onto fabric.

I the, manu actur e imbhen edif r fer Nani-e s .iedustrie se th .f i i pas e betwe n- .h ate .ml'le z i kh g enness a he t ng o ,Z u-bber hum int se fiiqe pi e ebnc. 'lConside able .q ent t- 9 :mlb eum extend bexQnd-thee ge-Q li i r cin passing thru the rollers, and it is necessary to trim this na terial closely to the edge of the fabric as can cqnsistently be LKCQQXU- plished withqut remeving any et the gum from the s urfeee of the feb ic adjacent the edge and without wasting gum by leaving a margin beyond the edge of the fabric.

It has been previously prqpoeed .to remove this gum selvage by ineansef vaiqiqus elabqrate achines that lwepewca used to follow the edge of the ifahtie by pilot meters or ,et-her delicate -ma. chine s These ,mechines have never prayed relieblezaltheugh yery expe sive and d l ca me han sm have bee In a ewz en with my .imenfien; l ,n i en r -In he wings i ath ,p fi ie 9f the ebt z tha i being e1ens3emd and h t i urged ,t 10105 o h iet o wi h lt eeist p of fabnic y (if e eprvieg-t e es=- .h t ng dg -zo lmy ehzee fiti me letene y against the edge .ef the fabric irpm {Wlllh h gum salvag i being t mm Th -o je Q myliment n i t zpm d a Q g tUF-iI F Q that wil leave r m q h an e n li is p a-t pn l e ween h edg f h iah and th gums rip hat 8 Emaile tem th f b i enq v-o je 9 my inv n isito .pmvidea. selvage trimmer thateanbe .adj isted laterally for gay [width f febnic that can be treated by theeelender nails and which will positively follow ell yeriatiens in the edge of the-iabric.

A addi i n l .obi lo y inve e s to devise a simple maehine zwhieh isine tpengive to manutacture, which requires little {er ,rio attention after it is onee edjusted and which may readily .be instaglhed for eperation en any eelendering niiachine.

1.01" the acegn ganying v dieWings is a detailed view in perspective Qf-a ,gum selvege nim e lszen t uc e n ecc an e :h. .I Y invention; and

igl et aehed l0 ze 1 d9r em en ged in eining th ee -we gum t am .th defi h ehfii A ,B-efeming pantieule lv 9 the i u es ,o fli tewing, heated calender {20 L51 and 1.1:, pqrt e' .Qi-whid; are h e kenl nayyeze sup- Pqxte in statiene y fl m 211. ccorda c t :u me ype fiz e- .eehe t of tab-d 13 that is being surfaced with gum is shown as passing thru the-rolls andestrip f gum selvage 1 4 ,is shown as being seveifed rpm the strip of fabric 13 by means of the selvage trimmer 15.

The selvag e trimmer l i s mognted on a bracket 16 that is secured to the frame 12. A carriage 17, that may ,be adjusted .l0ngi tudinally 0f the bigaeket .16, hes anarm 18 swingebly attached thereto for moyement ,in

-21 plane tangential .to the eurfeeeef the eeln e o le :l A {heli a ep in is mounted on the earniage l7 and is attached to th ar -12 u g h e m .1 t ard h edge of the {ahrie .13.

A impre detailedinsnection (if the appaa u sho s h h i enr eg is quipp d with an adj l st ment screw 20 that seci res the cer-niage 17 vin its yerio s p'ositiens Q :fihe. bracket- 16. The carriage lfflelso hesre reek 21 nounted ,thei eon for use ;in the adjustmen of e rep ntteneien hat is .imPQsd on the ignite erm ,13. A pivqt pin22, which 1 m eeleig heme vp iqn tha i adapt ed to support the helical portion pf "the spring 19 serves gtO swingably attach the erm 18;t0:the ca,ri ia ge 17. A pin 23, which ,may may m b n cessary ac g t th stelleticn, is mounted on .the carriage and adept-ed to limit-themoyement of the arm 18 toe predetermined innerrnest pesition. The xt em y 0 th arm 8: 5, k e 2 t hesen angula r cutting ed -ge 24 formed on its eggtnemity. 'Ehe,edge ifsgsulflciently fillerp to .sever the strip 0f excees gum from the of the fabric and leave ,a clean edge. In some instances it may be desirable teedjust the tip of the blade 24 to bear against the surface oflhe calender roll and in other st n s ;the end of the blade ,een be lifted from the tell-e suffieient degree to provide a clearance between the calender roll and the blade.

The knife 24 is made removable from the arm 18 in order that it may be readily replaced or resharpened when it becomes dull. The lugs 25 serve to rigidly connect the blade to the supporting arm 18.

The .L-shaped cutting edge 24 of the tool lies in the plane of the underneath surface of the blade 24, which plane is also-substantially tangential to the calender rolls at their point of contact. The cutting edge is formed at a rather blunt angle by grinding the tool laterally andby leaving a sharp edge on the lower-most face of the blade.

The adjustable carriage 17' that ivota'lly supports the blade24' is so supporte' relative to the calender roll that 'the body of the blade lies in the above described tangential planefand the blade is swung in this plane about the pivot '22, thereby maintaining the plane ofthe cutting edge at all times during theoperation of the tool substantially tangential to the calender rolls at their line of contact.

Oneend of the spring 19 extends under the U-member 27 that secures the end of the spring in operative relation with the swing able arm 18. The other end of the spring 19 is formed into a loop 29 by means of which the spring may be latched into a series of teeth that are formed in the upper edge of the rack 21 to adjust the spring tension.

Aselvage trimmer of thetype described may readily be installed on a calender machine by mounting the bracket 16 on the support for the calender rolls. The selvage trimmer 15 may then be mounted on this arm 16 and positioned longitudinally thereofto any convenient point that is substantially in thediredtion of inovement'of the fabric at the point Where it is desired' to. sever thestrip offrubber gum'from the edge of the fabric." g V The tension that is imposed on the arm l8..may then be'adjusted by altering theposition of the arm 29 of the helical. spring until a clean edge is obtained between'the fabric and the gum strip.

The stop 23 is not essential to thesuccessful.operationiof my machine since I have operated many trimmers oft-his type ,without a stop of any kind, but in lsbm'einstances this'stop "may be desirable to limit' the inwa rd movement of the knife edge. Al-

though I have described only a single modification of my invention, it is obviously not so limited in scope and 'I desire, therefore that only such limitations shall be imposed as are indicated in the accompanying claims.

hat I claim is:

, The. combination with a calendering machine having a plurality of rolls for treat ing sheet material, of a trimming device means "for positively riage' "to saidbracket, an aim pivotally comprising a blade extending substantiall oppositely to the direction in which the material to be trimmed is moved and havino its cutting edge disposed substantially ii; a plane parallel to the axes of the rolls. 2. The combination with a calendering machine having a rollfor treating sheet material, of a. trimmer embodying a stationary bracket, a carriage mounted on the bracket, "a trimming knife mounted on the carriage and adapted to swing laterally of said roll and extending substantially tangentially thereto, and means adapted to resiliently' hold the'edgeof: the knife against theedg'e ofthe material. 3. In a calenderingmachine for treating fabric, the combinationwith a calender roll, of a gum selvage trimmer comprising"a bracket, a carriage adjustably mounted thereon, a knife pivotall mountedfon 'said carriage to swing in a p ane tangent to the 7 roll, and resilient meansfurging the cuttingedge of said knife against'the edge" of the fabric. I

4. In a calendering machine for treating fabric, the combination with a calender roll of a gum 'selvage trimmer comprising a bracket, a carriage sl dably mounted thereon, means for positively locking said carriage to said bracket, an arm pivotally= mounted on said carriage and adapted to swing in a plane tangential to the surface of the roll, a blade removably mounted on said arm, a helical spring mounted on the pivotal support for. said arm-andhaving one end secured to said arm and the other .end extended to form an adj u sting handle, and a rack adapted to provide various degrees of" spring tension: 'mo'unted on the carriage. 5. In a calendering' machine for treating fabric, the combination with a calender roll, of a gum selvage trimmer comprising a bracket, a carriage s'lidably' o ckin'g" said carmounted on said carriage and adapted to swing in a plane tangential to the surface of the roll, a blade removably'mounted on said arm, a helical spring mounted on the pivotal support for said arm and having one end secured to said arm and the other end extended to form "an adjustin 1 handle, a rack carried by the' carriage -a apted to provide various degrees of spring tension for the arm, and a'stop adapted to'limit the movement of the arint.

6. In a calendering machine" for treating I fabric, the combination with a calender roll,

of a gum selvagetrimmer comprising a bracket,a'carriage slidably mounted thereon, means for locking said support in a plurality of operating positions, an arm swingably connected to said carriage, a spring adapted to urge the cutting edge of'the knife against the edge of the fabric, and a rack mounted there- 01 :1 gum selvage triinniei' mounted on said carriage for adjusting the tension of said spring.

7. In a calendering machine for treating fabric, the con'lbination with a caienilei' roli, conzpriisii'ig a bracket, a carriage atljnstably 1nounte l thereon, meals to? locking Stilt: izur age in a plurality 0t operating: n "tit- 115 a blade pivotalty mounted on mail; c rriage to swing in a plane tiingential to roll, resilient illtilllfl adapted to maintain the cutting col of the bla-tle again-t the edge oi the fabric, and nieam tor adjusting the preesure iniposecl by the resilient Brenna.

8. in a calendering machine For iltzltili gj fabric movable therethrough, the conibina tion with a calender roll, of a gain aelvage trimmer eon'ipriaing a bracket, a carriage acljustzibly mounted thereon, a hhule pivotally mounted on mitt carriage to sn'i' '1 a plane tangential to raid. roll, resilient n'ieanas l'or urging the cntting edge of the blade in a direction tranewwely to the ii rection of movement of the i'abrie and means for adjusting the tension of said re-aiiient 1110211154.

9. The combination With a mienzler ma chine that is adapted to treat eheet ma i of a gain SQlYt trin'nner conu r a blafle pivotally DIOUHtPtl to ewing in :1 plane tangent to the material at the point at contact ot the blacle with the material, alnl resilient means adapted to urge the cutti Y": edge of the blame laterally against the edge of the material.

10. In a calendering machine, the c01nbination with a calender roll of a nelvage trirnn'ier having a cutting tool pivotall inonntetl to swing in a plane tangential to the surface offine rolL the cutting edge being formed on one side oi the tool, and means tnlaptetl to it ilientiy urge the cutting tool laterally against the edge oi the fabric.

ii. in a caleinleiing machine. the comb} nation with 1'; ea'zenuer rolh oi :ehage trimmer having a cutting tool pivotally mounted to ;-,\\iin;-g in u p ane tangential to the surface of the roll, a cutting edge teri'netl on one bitli of the tool, means, a-z'la teil to resiliently urge the cutt moi laterally against the t e of the fabric* amt ineans t'ur atljust ng the tension of will resilient nieane.

l2, .ln a calenclerii'ig machine the combination with a calender ioll oi a gum :eelvage trii'nlner coinprieing ii stationary supporting bracket, a carriage atljustably n'ionnteel on Stiltl bracliiet a knife pivotally supported on the Carri A for movement in a plane enbatantially pallei to the axial direction of the roll an ring adapted to urge the hizu'ie later; contact with the edge wt the 'i'ahric.

iii. In a calcnilering machine the combination with a calender roll oi a gun'r f-iQlYtlgC trinuner having a cutting edge lying in and mounted to swing in a plane that is tangential to the :nnfiaee of said roll In \VltllBt-IH whereof, l haw: Signed my name.

hereunto PHILIP PAPPANO. 

